JPH01249024A - Device for bath furnace - Google Patents

Abstract

PURPOSE:To lessen loss in pressure in circulating water, and thereby prevent over-heated water from flowing into a bath tub as well as to enable the after-burning operation and the bubble bath operation to be simultaneously to be performed by providing a passage open/close valve for after burning for a bypass passage which is branched from a circulating passage so as to be joined with the circulating passage through a heat exchanger. CONSTITUTION:Water in a bath tub is circulated through a circulating passage 32 with a circulating pump 31 driven so as to be returned back to the bath tub 20 through an ejector 33 provided for the end of the passage. A bypass passage 34 is branched from the way of the passage 32 so as to pass through a heat exchanger coil 36 within a heat exchanger 35 so that it is joined with the circulating passage 32 again. The bypass passage 34 is provided with a passage open/close valve 37 for after burning. In addition, a jet air valve 40 is provided for an air induction passage 39 connected with a negative pressure build-up section 33a of the ejector 33. In after burning, the passage open/close valve 37 for after burning is opened, the air induction passage 39 is concurrently closed. And when a bubble bath is in operation, the air induction passage 39 is opened, the passage open/close valve 37 for after burning is closed. And when both after burning and and the bubble bath are simultaneously in operation, both of the passage open/close valve 37 for after burning and the air induction passage 39 are opened.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a bathtub device that can perform bubble bath operation in addition to reheating operation.

<Prior art> Fig. 4 shows a configuration diagram of a conventional device, in which 1 is a bathtub, 2 is a heat exchanger, 3 is a circulation pump, 4 is a three-way valve, 5 is an ejector,
Reference numeral 6 denotes an on-off valve for an air introduction path connected to the negative pressure forming section of the ejector 5. 7 is a short circuit path. During reheating operation, the three-way valve 4 is switched so that the water in the bathtub 1 is transferred to the heat exchanger 2.
During bubble bath operation, the three-way valve 4 is switched to the short-circuit passage 7 side to short-circuit the bath water, and the on-off valve 5 of the air introduction passage is opened to release air to the ejector 5 to form negative pressure. Bubbles are discharged into the bathtub 1 by suctioning from the bathtub 1.

Further, FIG. 5 shows a block diagram of another conventional device, which is also disclosed in Japanese Patent Laid-Open No. 62-204747. 1 is a bathtub, 2 is a heat exchanger, and 3 is a circulation pump. In this device, two valves 8.9 are provided in place of the three-way valve 4 in FIG. 4, and an air pump 10 is used to blow air into the device.

<Problems to be Solved by the Invention> However, the conventional apparatus shown in FIGS. 4 and 5 above has the three-way valve 4 or two valves 8 and 9 in the middle of the passage, so pressure loss during bubble bath operation is reduced. This has the disadvantage that a strong jet stream with sufficient bubbles cannot be introduced into the bathtub 1.

Furthermore, the device shown in FIG. 4 has a problem in that the high-temperature water that has been heated and accumulated in the heat exchanger 2 directly flows into the bathtub 1 when switching from bubble bath operation to reheating operation, etc. there were.

Furthermore, the apparatus shown in FIG. 5 uses an air pump 10, and since the air pump 10 is separated from the heat exchanger 2 side and placed separately near the bathtub 1, the heat exchanger 2 and the air pump 10 are not connected to each other. There was a problem that they could not be integrated and stored in one case.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, and the pressure loss of the circulating water during bubble bath operation is small. Therefore, a sufficient amount of bubbles can be vigorously spouted into the bathtub, and superheated water can suddenly enter the bathtub. It is possible to perform reheating operation and bubble bath operation at the same time, and it is possible to combine the heat exchanger and other parts necessary for reheating operation and the parts necessary for bubble bath operation in one case. The purpose of the present invention is to provide a bath kettle device that can be integrally configured inside the bathtub.

Means for Solving the Problems The bathtub device of the present invention comprises: a circulation passageway that guides water from the bathtub to a circulation pump and circulates discharged water from the circulation pump to the bathtub via an ejector; and the circulation passageway. a bypass passage that branches off midway through the heat exchanger and joins the circulation passage; a passage opening/closing valve for reheating provided in the bypass passage; and an air introduction connected to the negative pressure forming part of the ejector. When only the reheating operation is performed without performing the bubble bath operation, the reheating passage opening/closing valve is opened and the air introduction passage is closed. When only bath operation is performed, the air introduction passage is opened and the reheating passage opening/closing valve is closed;
The present invention is characterized in that the reheating passage opening/closing valve and the air introduction passage are opened when the reheating operation and the bubble bath operation are performed at the same time.

During reheating operation, the reheating passage opening/closing valve in the bypass passage is opened, so a part of the bath water circulating in the circulation passage flows to the bypass passage by driving the circulation pump and is heated by the heat exchanger. After that, it joins the circulation passage again and circulates into the bathtub. When a bubble bath operation is also performed during the reheating operation, the air introduction passage is also opened in addition to the passage opening/closing valve for reheating. When the air introduction path is opened, air is sucked into the ejector from the negative pressure forming part formed by circulating water passing through the ejector, mixed inside, and ejected into the bathtub in the form of bubbles. If bubble bath operation is not performed at the same time, the air introduction path is closed.

When only bubble bath operation is performed, the reheating passage opening/closing valve is closed and the air introduction passage is opened. By driving the circulation pump, bath water is circulated through the circulation passage, and air is sucked in from the negative pressure forming part of the ejector that is formed at that time.

In the present invention, since there is no need to provide a valve in the circulation passage, there is little pressure loss in the bathtub water circulating in the circulation passage, and therefore, when operating a bubble bath, a sufficient amount of bubbles can be sprayed with sufficient force into the bathtub. Can be done.

In addition, when reheating, the hot water heated by the heat exchanger always joins with the circulating water before being sent to the bathtub, so the high-temperature water remaining in the heat exchanger is sent directly into the bathtub.
No inconvenience such as discomfort to bathers occurs.

In addition, in the present invention, the operation for reheating only, the operation for only bubble bath,
Additionally, you can operate both reheating and bubble bath at the same time.

Further, according to the present invention, it is easy to configure components such as a heat exchanger required for reheating operation and components necessary for bubble bath operation in one case.

<Embodiment> FIG. 1 is an overall configuration diagram of an implementation apparatus of the present invention, and FIG. 2 is a control flowchart of driving operations by a controller.

20 is a bathtub, and 30 is a case for a bathtub. Case 3
Necessary members are housed and arranged inside 0. Reference numeral 31 denotes a circulation pump provided in the circulation passage 32, and when the circulation pump 31 is driven, bath water is circulated through the circulation passage 32. An ejector 33 is provided at the end of the circulation passage 32, and the circulating water returns to the bathtub 20 through the ejector 33.

A bypass passage 34 is branched from the middle of the circulation passage 32, and the bypass passage 34 passes through a heat exchange coil 36 in a heat exchanger 35 and joins the circulation passage 32 again. The bypass passage 34 is provided with a passage opening/closing valve 37 for reheating. The inside of the heat exchanger 35 is a hot water storage tank, and the water that enters the heat exchanger 35 is heated by a burner 38, and is discharged as necessary to supply hot water. The water passing through the heat exchange coil 36 is heated by hot water in the heat exchanger 35.

An air introduction path 39 is connected to the negative pressure forming portion 33a of the ejector 33, and a jet air valve 40 is provided in the air introduction path 39.

41 is a controller which receives commands from the remote control unit 42 and inputs information from the bath temperature sensor 43 and other sensors to issue predetermined control operation commands to the circulation pump 31, passage opening/closing valve 37, burner 38, Output to jet air valve 40 etc. In addition to the main operation switch, the remote control unit 42 is provided with a temperature control dial for the heat exchanger 35, a reheating operation switch, and a bubble bath operation switch.

Now, assuming that the main operation switch is turned on, if the reheat operation command is issued (Flow (a)), if the bubble bath operation command is not issued (Flow (B)),
When the circulation pump 31 starts driving, the reheating passage opening/closing valve 37 is opened and the jet air valve 40 is closed (flow (c)), whereby the bathtub water flows into the circulation passage 32.
At the same time, part of the circulating water flows from the circulation passage 32 to the bypass passage 34, is heated through the heat exchange coil 36, joins the circulation passage 32 again, and is further circulated through the ejector 33 into the bathtub 20. be done. The high-temperature water heated by the heat exchange coil 36 joins the circulating water passing through the circulation passage 32, so that its temperature is moderated appropriately, and the bather is prevented from feeling discomfort caused by the high-temperature water directly flowing into the bathtub 20. I won't give it. When the bathtub temperature reaches a predetermined temperature (flow (d)), the driving of the circulation pump 31 is stopped (flow (e)) via the controller 41 in response to a signal from the bath temperature sensor 43.

When a bubble bath operation command is issued in addition to the reheating operation command (flows (a) and (b)), the circulation pump 31 is turned on, and the jet air valve 40 is opened in addition to the passage opening/closing valve 37 (flow (fart)). Bathtub water circulates through the circulation passage 32, and a portion of it passes through the bypass passage 34 and is heated.

Since all the circulating water discharged from the circulation pump 31 forms a large negative pressure when passing through the ejector 33, air flows through the jet air valve 40 into the air introduction path 39.
, and is sucked into the ejector 33 from the negative pressure forming portion 33a of the ejector 33. Then, it is mixed with the circulating water inside the ejector 33 to become foamy water, which is ejected from the ejector 33 into the bathtub 20. Since the circulation passage 32 is not provided with any obstructions such as valves that cause pressure loss, the circulating water can be passed into the ejector 33 with sufficient discharge force. Therefore, the suctioned air effectively turns into bubble water, and the bubble water is transferred to the bathtub with sufficient force.
It can be ejected within 0.

During operation, when the bath water is reheated to a predetermined temperature, only the passage opening/closing valve 37 is closed, and the bubble bath operation continues (flow (su)).

On the other hand, if the reheating operation command is not issued and only the bubble bath operation command is issued (flows (a) and (ch)),
The passage opening/closing valve 37 is closed, the jet air valve 40 is opened, and the circulation pump 31 is driven (flow (d))
. In this case, the bathtub water does not flow to the bypass passage 34 side, but circulates only through the circulation passage 32, and air is sucked in from the negative pressure forming part 33a of the ejector 33 in the same way as above, and becomes bubbles into the bathtub 20. It is squirted.

FIG. 3 is a configuration diagram showing a modification of the present invention.

In this example, a heat exchanger 50 for hot water supply and its burner 51
is configured separately from the instantaneous heat exchanger 60 for reheating, and is configured as a so-called two-can, two-channel system. With this configuration, the passage opening/closing valve 37 for reheating that should be provided in the bypass passage 34 is omitted, and instead, reheating operation can be performed only by turning on and off the burner 61. That is, when reheating operation is performed, the burner 61 is burned, and the water that has passed through the bypass passage 34 is transferred to the heat exchanger 6.
Instant heating at 0. Further, when the reheating operation is not performed, the water passing through the bypass passage 34 is transferred to the heat exchanger 60.
It rejoins the circulation passage 32 without being heated.

Effects> The present invention has the above-described structure, and there is no need to provide a member such as a valve that causes pressure loss in the circulation passage. Therefore, when operating a bubble bath, a sufficient amount of bubbles can be generated efficiently and with sufficient force. The foam can then be ejected into the bathtub through the ejector.

Moreover, during reheating operation, the high-temperature water that has passed through the heat exchanger is always combined with the circulating water and then introduced into the bathtub, so there is no possibility that the high-temperature water will flow directly into the bathtub and cause discomfort to the bather. It will be resolved.

Furthermore, in the present invention, while performing the reheating operation, the bubble bath operation can also be performed at the same time.

In addition, in the present invention, by using the vigorously circulating water discharged into the ejector from the circulation passage, sufficient bubble water and its ejection force are obtained in the ejector, so that the air generation source such as the air pump is replaced with the bathtub. There is no need to place it very close to the
Therefore, the heat exchanger and other members necessary for reheating operation and the members necessary for bubble bath operation can be compactly housed in one case.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an implementation device of the present invention, FIG. 2 is a control flowchart of operating operations by a controller, FIG. 3 is a configuration diagram of another implementation device of the invention, and FIGS. 4 and 5 are respectively FIG. 2 is a configuration diagram of a conventional device.゛20: Bathtub 30: Bath pot case 31: Circulation pump 32: Circulation passage 33: Ejector 34: Bypass passage 35: Heat exchanger 37: Reheating passage opening/closing valve 39: Air introduction passage 40 Nijet air valve 41: Controller 60: Heat exchanger

Claims (1)

[Claims] A circulation passage that leads water from the bathtub to a circulation pump and circulates water discharged from the circulation pump to the bathtub via an ejector, and a circulation passage that branches off from the middle of the circulation passage and joins the circulation passage through a heat exchanger. It has a bypass passage for reheating, a passage opening/closing valve for reheating provided in the bypass passage, and an air introduction part connected to the negative pressure forming part of the ejector, and allows only reheating operation without performing bubble bath operation. When carrying out the reheating operation, the reheating passage opening/closing valve is opened and the air introduction passage is closed, and when only the bubble bath operation is performed without reheating operation, the air introduction passage is opened and the air introduction passage is closed. A bath kettle characterized in that the reheating passage opening/closing valve is closed and the reheating passage opening/closing valve and the air introduction passage are opened when reheating operation and bubble bath operation are performed simultaneously. Device.